half-wave amplifier

例句：

1. 1.The half-wave amplifier is used to amplify the signal.
   半波放大器用于放大信号。
2. 2.The half-wave amplifier is an essential component in the circuit.
   半波放大器是电路中必不可少的组件。
3. 3.The half-wave amplifier can be used to boost the voltage level of the input signal.
   半波放大器可以用来提升输入信号的电压水平。